CXSD62317是一种双高效脉冲宽度调制（PWM）降压DC/DC转换器。它能够在宽输入电压范围内输出1.5A的电流2.3V至6V，CXSD62317非常适合为便携式电子设备供电从单电池锂离子电池或其他电源，如手机，掌上电脑和其他手持设备。有两种操作模式。脉宽调制/低损耗
自动切换和关机模式。低RDS（ON）的内同步整流器降低了在PWM模式下的传导损耗。在实际应用中不需要外部肖特基二极管申请。
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产品概述 返回TOP
The CXSD62317 is a dual high-efficiency Pulse-Width-Modulated (PWM) step-down DC/DC
converter. It is capable of delivering 1.5A output current over a wide input voltage range from
2.3V to 6V, the CXSD62317 is ideally suited for portable electronic devices that are powered
from 1-cell Li-ion battery or from other power sources within the range such as cellular phones,
PDAs and other handheld devices. Two operational modes are available. PWM/Low-Dropout
auto-switch and shutdown modes. Internal synchronous rectifier with low RDS(ON) dramatically
reduces conduction loss at PWM mode. No external Schottky diode is required in practical
application. The CXSD62317 enters Low-Dropout mode when normal PWM cannot provide
regulated output voltage by continuously turning on the upper PMOS. The CXSD62317 enter
shutdown Mode And consumes less than 0.1μA when EN pin is pulled low.
产品特点 返回TOP
High Efficiency: Up to 96%
1.5MHz Constant Frequency Operation
1.5A Output Current
No Schottky Diode Required
2.3V to 6V Input Voltage Range
Output Voltage as Low as 0.6V
Low Quiescent Current: 35μA
Thermal Fault Protection
Inrush Current Limit and Soft Start
<1μA Shutdown Current
Small 12-Lead WDFN package
应用范围 返回TOP
Cellular and Smart Phones
Personal Information Appliances
Wireless and DSL Modems
MP3 Players
Digital Still and Video Cameras
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产品封装图 返回TOP
电路原理图 返回TOP
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双输出转降压换器Dual Output Regulator (Power Switch Integrated) |
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|
Part Number |
Function |
Vin(V) |
Iout |
Fsw |
VREF(V) |
HSFET Ron(Ω) |
LSFET Ron(Ω) |
Special Function |
Package |
|
双通道降压 |
2～6 |
0.8 A |
1.5MHz |
0.6 |
0.35 |
0.3 |
Int SS/Comp |
DFN3x3-10 |
|
|
双通道降压 |
2.3～6 |
1.5 A |
1.5MHz |
0.6 |
0.1 |
0.09 |
Int SS/Comp |
DFN3x3-12 |
|
|
双通道降压 |
2.3～6 |
2 A |
1.5MHz |
0.6 V |
0.1 |
0.09 |
Int SS/Comp |
ESOP8 |
|
